Float-valve for filling-machines.



No. 883,254. PATENTED MAR. v31, 1908. F. G. H. STRASBURGER.

FLOAT VALVE FOR FILLING MACHINES.

APPLICATION FILED 00121. 1906.

2 SHEETS-SHEBT l.

' V imam. lmlllllilllllmi .4 W 4 r/zg No. 883,254. I PATENTED MAR. 31, 1908. P. G. H. STRASBURGBR. FLOAT VALVE FORv FILLING MACHINES.

APPLIOATION FILED OUT. 1. 1906.

2 SHEETS-SHEET 2.

kg Z UNITED STATES PATENT. OFFICE.

FRANK C. H. STRASBURGER, OF CHICAGO, ILLINQIS, ASSIGNOR TOBOTTLERS MACHINERY MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS A CORPORATION. OF ILLINOIS.

FLOAT-VALVE FOR FILLING-MACHINES.

To all whom it may concern:

Be it known that I, FRANK O. H. SrRAs- BURGER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and use the supply of liquid in the liquid tank of a bottle filling machine.

The invention is particularly ada ted for use in connection with those mac ines in which the filling operation is conducted under pressure and having an air ti ht liquid tank, and for that reason I have 0 osen one of these machines to illustrate the invention.

In the accompanying drawingsFigure 1 is a sectional elevation of'a counter-pressure bottle filling machine embodying-my invention; Fig. 2 is an enlar ed sectional view of the tank showing the float valve partly in section. v

The filling machine which I have chosen for illustratin the invention comprises a revoluble sha t 3 which carries a spider 4 and a liquid tank 5, the latter having a removable top 6 which may be secured on the tank in an air tight manner. The liquid is conducted to the tank by a supply pipe 7' and the branches 7. The s ider carries a lurality of bottle rests 8 which are located beneath the filling mechanisms 9 depending from the tank and are raised by pneumatic lifts 10 to carry the bottles into engagement with and to operate the filling mechanisms. I make no claim in this a plication to any other features except the this reason it is not considered necessary to enter into a more detailed description of the filling machine itself. v

Referring particularly to Fig. 2 the' valve comprises a tube 11 which has a threaded end12 rojecting through the bottom 13 of the tank and securedby a nut 14. The upper end 15 of the'tubell is tapered. A sleeve 16 is slidabl arra ed on the tube and it is made part yin ske eton form, preferably,"to reduce the Wei ht. A rubber or other disk 17 is held in p ace on the u er end of the sleeve by a screw cap 18 anrfbeneath the cap the sleeve is provided with one or more lateral ports 19. An arm 20 is ad- Specification of Letters Patent.

Application filed. October 1,1906. Serial No. 336,930.

oat valve and for Patented March '31, 1908.

justably mounted on the tube below the sleeve and a lever-21 is pivoted at 22 on said arm and carries at its outerend a ball 23 The inner end of said lever is provided with a toe-.24 arranged beneath the lower end of thp) sleeve and with a heel 25 to engage the tu e.-

In ractice, the liquid is forced under a suitab e pressure into the tank, compressing the air therein, until there is a suflicient su l of liquid in the tank to commence t e lling operation. Then the shaft 3 is rotated car mg with it the spider and the tank and the ottle lifts are automatically operated in succession to move the bottle rests, with the bottles thereon, up into engagement with and to open the filling mechanisms 9. Provision is made, in any of the well known ways, for

ermitting the pressure in the tank and the ottle to equalize before the liquid begins to fiow,-as through an air passagem the pipes 9 and 9", and when the liquid begins to flow into the bottle the air in the bottle esca es through this air assage into the tank. he float valve is emp oyed to automatically re ulate the su ly of liquid in the tank an it will be rea il y understood that as the liquid rises in the tank the float will rise and swing the lever 21, carrying the toe 24 downand permittin the sleeve 16. to fall by gravity and seat t e disk 10,,which forms the valve, on the upper end of the tube 11. Thus the valve is closed when the liquid has reached a predetermined level in the tank and then the air in the tank prevents the entrance of more liquid through the branch supplyv i es .7". As the level of the liquid in the tank a s during the filling o eration the sleeve 16 is raised to unseat t e'valve 17' and ermit air to escape from the tank so that t e flow of liquid into the tank may be resumed. The operation ofthe float valve is very sensitive because very little movement of the float is required to unseat the valve 17 and therefore the predetermined quantity of liquid can be maintained in the tank without much variation. This is especially important in connection with beer filling machines for if there is considerable variation in the level of the liquid in the tank from time, to time foaming may be produced in the tank by the sudden entrance of beerfrom the 'supply and this foaming is very objectionable and seriously interferes with the filling operation. By adjusting the arm 20 the float can be set to maintain the desired level of liquid in the tank. The heel 25 is arranged to engage the tube 11 to limit the downward movement of tank and extending therethrough, a valve at the upper end of said tube, a lever pivotally sup 'orted on said tube, a float on one end .of sa1 lever, a toe on the other end of said lever to operate said valve, and a heel on the lever below the toe to bear against the tube and limit the downward movement of the float.

2. The combination with an air tight liquid tank of a filling machine, of an air escape tube mounted within the tank and communicating with the atmosphere, a sleeve slidably mounted on the tube, a valve at the upper end of said sleeve, there being lateral ports in the sleeve below said valve, a lever pivotally supported on said tube beneath the sleeve, a float on one end of said lever, and a toe and heel on the other end of said lever,

the 'toe being arranged to raise the sleeve and open said valve and the heel being arranged beneath the toe to bear against the tube and limit the downward movement of the float.

3. The combination with an air tight liquid tank of -a filling machine, of an air escape tube mounted in the bottom of the tank and extending therethrough, the upper end of said tube be' tapered, a sleeve slidablg mounted on sai tube and provided wit lateral ports opplosite said tapered end of the tube, a cap on t e upper end of said'sleeve, a disk held by the cap and forming a valve to seat on the upper end of. the tube, an arm adjustably mounted on the'tube below the sleeve, a lever ivoted on the arm, a float on one end of sai lever, a toe on the other end of said lever beneath the sleeve to raise the same and unseat thevalve, and a heel on the lever beneath the toe to bear against the tube and limit the downward movement of the float. 1 v

FRANK C. H.,STRASBURGER. Witnesses:

WM. 0. BELT, W. N. WEIsKIRoH. 

